Exploration into Design Issues of Electronic Scales

Electronic scale is a commonly used measuring tool in people's daily work and life. The circuit structure and related principles in the hardware of digital electronic scales. The electronic scale designed in this article has functions such as weighing, keyboard input, price calculation, numerical display, and overweight alarm. The measurement range of the electronic scale is 0 to 20 kilograms, with an accuracy of up to 10 grams. This electronic scale has the characteristics of high accuracy, low cost, and easy portability. First, use a sensor to convert the weight signal of the electronic scale into a voltage signal, then amplify and input the voltage signal of the electronic scale into an A/D converter. Use an A/D conversion system to convert the analog signal into a digital signal, and then transmit the digital signal of the electronic scale to the microcontroller. Use a program to process the signal and reflect the weighing function of the electronic scale. Then, multiply the keyboard and weight input into the unit price to calculate the total price, and display the price and weight on the LCD screen.